| Value | Category | Cases | |
|---|---|---|---|
| 1 | O2_FA | 23 | 
                                    
                                    4.6%
                                 | 
| 2 | O2_FA O2_HA | 3 | 
                                    
                                    0.6%
                                 | 
| 3 | O2_HA | 307 | 
                                    
                                    61.4%
                                 | 
| 4 | O2_HA O2_FA | 159 | 
                                    
                                    31.8%
                                 | 
| Missing value | 8 | 
                                    
                                    1.6%
                                 |